When creating dialogue, writers (especially new writers) face a variety of challenges: how does this dialogue fit into my story?  Is this too lengthy?  Is he speaking in character?  But one seemingly small challenge can pose a significant problem to those not trained enough to know how to avoid it: use of the word 'said.'  He said this, she said that, pretty soon all sentences of dialogue can begin to seem dreadfully unappealing.  An easy fix is to simply consult a thesaurus for synonyms, but even the thesaurus is not likely to list every potential option.  Likely, it will mention common replacements like 'spoke,' 'replied,' and 'expressed.'  However, the best fit for any given sentence could potentially be left unlisted.  Here I have compiled fifteen great substitutes that are much more interesting and informative than 'said.'

Announced: this is best used when your character is declaring something important or unexpected.

Assured
: this could be useful when the character is promising, encouraging, or comforting another character.

Commanded: this is best used when your character assertively or forcefully instructs another character to act in a certain way.

Divulged: this is useful when your character reveals private information, such as gossip.

Insisted: use this if the character is assertively affirming something, or even being pushy.

Mumbled: this is useful when your character is speaking quietly and incoherently. Simple but expressive term.

Noted: this is a great term for when the character is paying specific attention to a detail, either related to the discussion he is having or about his environment.

Pleaded
: this is an expressive term used when the character is desperately begging.

Revealed: this is best used when the character exposes information previously unknown to his audience.

Scolded: use this when your character is verbally reprimanding another character.

Sobbed: use this when the character is very upset, usually uncontrollably crying.

Snapped: this is best used when the character suddenly speaks harshly to another character.

Stammered: this is usually used when your character stutters or is having trouble communicating.

Warned: use this when the character is advising his listener to be careful, or informing him of potential harm.

Whispered: use this when your character speaks very quietly or under his breath.

There are dozens of more synonyms to help get around this problem and improve your creative writing, but I have provided a good platform for getting started. Have fun with it!